01 a. Not loyal; not true to a sovereign or lawful superior, or to the government under which one lives; false where allegiance is due; faithless…
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1.
Not loyal; not true to a sovereign or lawful superior, or to the government under which one lives; false where allegiance is due; faithless; as, a subject disloyal to the king; a husband disloyal to his wife.“Without a thought disloyal.” — Mrs. Browning.
Syn.
Disobedient; faithless; untrue; treacherous; perfidious; dishonest; inconstant; disaffected.